Pith Number

pith:6CALNFQJ

pith:2011:6CALNFQJRARO3MFKIBAMWZP5OS

not attested not anchored not stored refs pending

Tractability results for the Double-Cut-and-Join circular median problem

Ahmad Mahmoody-Ghaidary, Cedric Chauve, Ladislav Stacho

arxiv:1111.5872 v1 · 2011-11-24 · cs.DM · cs.DS

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6CALNFQJRARO3MFKIBAMWZP5OS}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T04:07:42.073931Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f080b696098822edb0aa4040cb65fd74a20ce1c5e247ded73d38672276f4144d

Aliases

arxiv: 1111.5872 · arxiv_version: 1111.5872v1 · doi: 10.48550/arxiv.1111.5872 · pith_short_12: 6CALNFQJRARO · pith_short_16: 6CALNFQJRARO3MFK · pith_short_8: 6CALNFQJ

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/6CALNFQJRARO3MFKIBAMWZP5OS \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: f080b696098822edb0aa4040cb65fd74a20ce1c5e247ded73d38672276f4144d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d110a0a45e1b65d8895d943e196397746b674afe74660bb8d145c91e3a529b7f",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2011-11-24T23:53:48Z",
    "title_canon_sha256": "d1fdb7309a3b75be9685a4652fde8f7127564ae43034bfeb60ebe3646931cb24"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.5872",
    "kind": "arxiv",
    "version": 1
  }
}